Sunday, December 7, 2008

2008/014) Solve the equation 4xABCD=DCBA

A has to be < 3 because 3* 4 = 12 so RHS is a 5 digit number
A cannot be 1 as from RHS A has to be even.
So A has to be 2.
now B can be either 1 or 3 or 5 or 7 but B < 5 because 4*25 = 100 that is 5 digit
So AB = 21 or 23
if AB = 23 DC >= 92do D = 9 which is not possible as 4*8 is 2 ending but 4*9 is notAB = 21
So D = 8
so the number = 4*(2108+10C) = 8032+100C
or 8432+40C = 8012+ 100C
or 60C = 420
so C =7
so number = 2178*4 = 8712

10 comments:

  1. cool guys! check the latest unregulated rid of [url=http://www.casinolasvegass.com]casino[/url] games like roulette and slots !research loose the all chic deliver [url=http://www.casinolasvegass.com]online casino[/url] games at the all stylish www.casinolasvegass.com, the most trusted [url=http://www.casinolasvegass.com]online casinos[/url] on the cobweb! high-class our [url=http://www.casinolasvegass.com/download.html]free casino software download[/url] and carry out home the bacon money.
    you can also authenticate other [url=http://sites.google.com/site/onlinecasinogames2010/]online casinos bonus[/url] . you should also check this [url=http://www.realcazinoz.com/fr]Casino en ligne[/url], [url=http://www.realcazinoz.com/it]Casino Online[/url] and [url=http://www.realcazinoz.com/es]casino en linea[/url] games. join the the largest [url=http://www.texasholdem-online-poker.com/]online poker[/url] room. check this new [url=http://www.realcazinoz.com/paypalcasino.htm]paypal casino[/url]. [url=http://www.ttittancasino.com]Online Casino Spiele[/url] , buy [url=http://www.web-house.co.il/acai-berry.htm]acai berry[/url] . [url=http://www.avi.vg/search2.php?a=sex4sexx&ser_key=bondage+]bondage[/url] [url=http://www.thecasino.co.il/ilcasino.htm]casino[/url] . [url=http://en.gravatar.com/willinger18]online casino games[/url] , [url=http://www.web-house.co.il/buy-k2.htm]Buy k2[/url] and new [url=http://casino-online.wikispaces.com/Online+Casino+Games]online casino[/url]

    ReplyDelete
  2. Cool web site, I hadn't noticed math-kali.blogspot.com previously in my searches!
    Carry on the wonderful work!

    ReplyDelete
  3. Thanks for sharing this link, but unfortunately it seems to be offline... Does anybody have a mirror or another source? Please answer to my post if you do!

    I would appreciate if a staff member here at math-kali.blogspot.com could post it.

    Thanks,
    Thomas

    ReplyDelete
  4. Thanks for sharing this link, but unfortunately it seems to be offline... Does anybody have a mirror or another source? Please reply to my post if you do!

    I would appreciate if a staff member here at math-kali.blogspot.com could post it.

    Thanks,
    Jack

    ReplyDelete
  5. Hello there,

    I have a message for the webmaster/admin here at math-kali.blogspot.com.

    May I use part of the information from this blog post right above if I provide a backlink back to your site?

    Thanks,
    Charlie

    ReplyDelete
  6. Greetings,

    Thanks for sharing this link - but unfortunately it seems to be down? Does anybody here at math-kali.blogspot.com have a mirror or another source?


    Thanks,
    James

    ReplyDelete
  7. For the great posts

    I'll be back soon.


    Thank you!


    [url=http://www.ineedsalesleads.com]Diabetic Leads[/url]

    ReplyDelete
  8. Hi - I am certainly glad to discover this. Good job!

    ReplyDelete
  9. Hi - I am certainly delighted to discover this. Good job!

    ReplyDelete
  10. Its like you learn my thoughts! You seem to know so much about this, like you wrote the ebook in it or something. I think that you can do with some % to drive the message house a bit, however other than that, that is excellent blog. An excellent read. I'll definitely be back.

    ReplyDelete